Function blocks and faceplates for evaluation of the diagnostic interface "COM" of the SITOP SEL1200/SEL1400 and visualization of the device data
The diagnostic interface "COM" of the SEL1200 and SEL1400 provides a signal that transmits the following device data as a Manchester code:
- Status information
- Current output current values at the outputs
- Current limit values at the outputs
- Device information
The following library provides function blocks for SIMATIC S7-1200, S7-1500 and S7-300/S7-400 as well as faceplates for SIMATIC Comfort Panels. The function blocks enable you to read in and evaluate the signal of the diagnostic interface "COM" via a digital input at the S7-CPU. You can use the faceplates to clearly display the device data on an HMI control panel.
- The library blocks for SIMATIC S7-1500 can also be used in an ET 200SP CPU and ET 200pro CPU.
- The library blocks for SIMATIC S7-300/S7-400 can also be used in an ET 200S CPU and ET 200pro CPU.
The following figure shows the graphic representation of the solution.
|2||CPU with function block (FB)|
|3||Digital input module / Digital output module (DI / DO)|
|4||Diagnostic interface "COM"|
|5||RESET input "RST"|
|6||Output 1 to 8 24 V DC|
|7||Input 24 V DC|